Sk Hynix Nand Product Solutions Corp.

Intel Corporation

Jackson Ellis

Sanjeev N Trika

Piotr Wysocki

Jonathan M Hughes

Ziye Yang

Gang Cao

Xiaodong Liu

Changpeng Liu

Peng Li

James R Harris

Benjamin Walker

Qihua Dai

Gregory Tucker

Gregory B Tucker

Systems and methods for a controller including controller memory and logic are presented herein. The logic is configured to control access to a persistent storage media and, in response to one or more commands, determine an intermediate parity value based on a first parity calculation by sending a uni-directional command to the persistent storage media. The logic is further configured to store, in the controller memory, the intermediate parity value, and determine a final parity value based on the intermediate parity value and a second parity calculation.

ON-SSD erasure coding with uni-directional commands

An embodiment of an electronic apparatus may include one or more substrates, and logic coupled to the one or more substrates, the logic to control access to a primary persistent storage with a first type of media and a nonvolatile memory buffer with a second type of media that is different from the first type of media, store metadata for incoming write data in the nonvolatile memory buffer, store other data for the incoming write data in the primary persistent storage, and provide both runtime and power-fail write atomicity for the incoming write data. Other embodiments are disclosed and claimed.

SSD managed host write atomicity with arbitrary transfer length

An embodiment of an electronic storage system includes one or more storage drives, at least one or more of the storage drives supporting erasure coding (EC); and a controller including logic to control local access to the one or more storage drives. The controller, in response to a write command, is to for one or more storage drives, allocate an intermediate buffer in the storage drive's non-volatile memory (NVM) to store intermediate data. The controller is to issue commands to a first storage drive to read old data, compute the intermediate data of the first storage drive as XOR of the old data and new data received in the write command, and atomically write the intermediate data of the first storage drive to the intermediate buffer of the first storage drive and write the new data to the first storage drive's NVM. The controller is to read the intermediate data of the first storage drive from the intermediate buffer of the first storage drive. The controller is further to issue commands to one or more EC storage drives to read the old data, compute result data as the old data XOR a galois field coefficient of the one or more EC storage drives multiplied by the intermediate data, and atomically write the old data to the intermediate buffer of the one or more EC storage drives and write the result data to the one or more EC storage drive's NVM. Other embodiments are disclosed and claimed.

Erasure coding write hole closure for solid-state drive (SSD) erasure coding

Systems and methods for a controller including controller memory and logic are presented herein. The logic is configured to control access to a persistent storage media and, in response to one or more commands, the logic determines an intermediate parity value based on a first parity calculation, and using the intermediate parity value determines a final parity value based on the intermediate parity value and a second parity calculation. Determining the intermediate parity value includes sending a uni-directional command to read an old data value from an address indicated in the uni-directional command, perform an exclusive-or operation on the old data value and a new data value indicated in the uni-directional command to determine the intermediate parity value and store, in the persistent storage media, the intermediate parity value at a location associated to an index indicated in the uni-directional command.

On-SSD erasure coding with uni-directional commands

Growing community of inventors

Fort Collins, CO, United States of America

Jackson Ellis